February 1, 2013
By Warren Silberman
One of the more commonly seen irregular heart rhythms at the FAA is atrial fibrillation, or A-fib. Your normal electrical heart beat originates in the upper chamber in the heart known as the atrium. It starts in an area known as the sinus node and spreads from there. In atrial fibrillation the electrical impulse begins from many areas, at least 250 in a minute!
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